Eastern-Junggar-coal fired double-reheat steam power plant boiler

A technology for secondary reheating and power plant boilers, which is applied in steam boilers, steam superheating, lighting and heating equipment, etc. It can solve the problems that power plant boilers cannot be used for a long time, safely and completely, and achieve high available enthalpy drop and reduce Effect of thermal deviation and low energy consumption

Inactive Publication Date: 2014-10-01
章礼道
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Solve the problem that the power plant boilers in the prior art cannot burn Zhundong coal in a long-term, safe and complete manner

Method used

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  • Eastern-Junggar-coal fired double-reheat steam power plant boiler
  • Eastern-Junggar-coal fired double-reheat steam power plant boiler

Examples

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Effect test

Embodiment Construction

[0054] Combine now figure 1 with figure 2 Taking a 600MW class secondary reheat Π-type utility boiler with main steam temperature / primary reheat steam temperature / secondary reheat steam temperature 605°C / 623°C / 623°C as an example to illustrate the optimal way to realize the invention.

[0055] The secondary reheat power station boiler using Zhundong coal of the present invention includes a furnace and a burner (1), a panel superheater (2), a medium temperature reheater (3), a high temperature superheater (4), a high temperature reheater Heater (5), secondary high-temperature reheater (6), smoke folding angle (7), air-smoke injector cut-off baffle (8), temperature-regulating air-smoke injector (9), injector out of service Protective cooling wind baffle (10), separated secondary air wind box (11), economizer (12), secondary low temperature reheater (13), primary low temperature reheater (14), low temperature superheater (15) , injector hot primary air regulating baffle (16), ...

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Abstract

The invention discloses an eastern-Junggar-coal fired double-reheat steam power plant boiler, and relates to a double-reheat steam power plant boiler which can be used by a thermal power station for a long time, and is safe, economical, and completely eastern-Junggar-coal fired. A tail flue is divided into a front flue, a middle flue and a rear flue by division walls, and the three flues all adopt structural supports; an ejector primary hot wind regulation baffle opens when the boiler is at middle or lower load, and the opening of the ejector primary hot wind regulation baffle is controlled to enable double reheat steam temperature to be kept at a rated value in the range of 40% to 100% BMCR; sequence and quantity of temperature-regulation air-flue ejectors along the width direction of the boiler are changed, so that thermal deviations of high-temperature heating surfaces along the width direction of the boiler can be compensated and reduced; a strong directional supersonic steam flow soot blower system is arranged on the ceiling, DCS controls continuous soot blowing time and interval time of each supersonic steam flow nozzle set, and thereby the thermal deviation of each high-temperature heating surface can be further compensated; the low thermal deviations effectively relieve the growing process of an oxide skin on the inner side of each high-temperature heating surface, so that operational reliability is significantly improved.

Description

(1) Technical field: [0001] The invention relates to a double-reheat power station boiler using Zhundong coal, which relates to a long-term, safe, economical, and complete double-reheat power station boiler used in thermal power stations. (two) background technology: [0002] The double-reheat power plant boiler used in the prior art thermal power plant is used to supply steam to the double-reheat turbo-generator set, and the design of the typical boiler-side main steam temperature / primary reheat steam temperature / secondary reheat steam temperature The values ​​are 605°C / 623°C / 623°C. [0003] A typical double-reheat turbogenerator is equipped with a four-stage high-pressure heater and a separate steam cooler, and the boiler feed water temperature is as high as 330°C; the steam inlet temperature of the primary low-temperature reheater and the steam of the secondary low-temperature reheater The inlet temperature is generally 420-440°C. [0004] The main steam temperature adj...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F22G7/12F22G1/02F22B31/08F23J15/06
Inventor 章礼道
Owner 章礼道
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