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200 MW grade high-efficiency subcritical boiler

A grade, boiler technology, applied in steam boilers, boiler water pipes, steam boiler accessories, etc., can solve the problems of low main steam pressure, low reheat steam temperature, low main steam temperature, etc., to reduce coal consumption, improve efficiency, improve The effect of market competitiveness

Inactive Publication Date: 2019-07-05
HARBIN BOILER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problems of low main steam pressure, low main steam temperature and low reheat steam temperature of the existing 200MW boiler unit, and provide a 200MW level high-efficiency subcritical boiler

Method used

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  • 200 MW grade high-efficiency subcritical boiler
  • 200 MW grade high-efficiency subcritical boiler
  • 200 MW grade high-efficiency subcritical boiler

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0014] Specific embodiment 1: This embodiment is a high-efficiency subcritical boiler of 200MW level, which includes a drum S-14, a water wall, a cladding wall, a superheater, a reheater, an economizer, and a desuperheater; the furnace The outer ring is equipped with a water-cooled wall and a cladding wall, and the cladding wall is equipped with a superheater, a reheater, an economizer and a desuperheater, and the water-cooled wall is connected to the drum; a unit with double flue at the tail is adopted, and The radiation reheater R-8 is arranged on the unit with double flue at the tail; the swing burner 1 is installed in the middle of the water wall; the reheater side temperature regulation baffle 2 and the superheater side temperature regulation baffle 4 are arranged;

[0015] The steam parameters of the 200MW high-efficiency subcritical boiler are as follows: the main steam pressure is 17.5MPa·g, the main steam temperature is 571°C, and the reheat steam temperature is 569°C....

specific Embodiment approach 2

[0017] Specific embodiment two: the difference between this embodiment and specific embodiment one is: the composition and connection of the superheater are as follows:

[0018] The ceiling inlet header S-2 is connected to the drum S-14 through the steam outlet pipe S-1, and the ceiling inlet header S-2 is connected to the ceiling outlet header S-4 through the ceiling pipe S-3. The ceiling outlet header S-4 is connected to the lower header S-9 of the rear flue front wall through the rear flue front wall S-5, and the ceiling outlet header S-4 is connected to the lower header S-9 of the rear flue rear wall. The header S-12 is connected through the roof pipe S-6 of the rear flue and the rear wall of the rear flue S-7, the lower header S-9 of the front wall of the rear flue and the lower header S-12 of the rear wall of the rear flue are respectively Connect with the lower header S-10 of the side wall of the rear flue, the lower header of the side wall of the rear flue S-10 and the...

specific Embodiment approach 3

[0021] Embodiment 3: The difference between this embodiment and Embodiment 2 is that the lower header S-9 on the front wall of the rear flue and the header S-18 on the side wall of the horizontal flue pass through the lower header of the horizontal flue. The box connecting pipe S-15, the lower header box S-16 of the side wall of the horizontal flue and the pipe S-17 of the wall of the horizontal flue are connected. Others are the same as in the second embodiment.

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Abstract

The invention relates to a 200 MW grade high-efficiency subcritical boiler, and relates to a 200 MW grade boiler. The boiler aims to solve the problems of low main steam pressure, low main steam temperature and low reheating steam temperature of an existing 200 MW boiler unit. The 200 MW grade high-efficiency subcritical boiler adopts a unit with tail double flues, and a radiant reheater is arranged on the unit with the tail double flues; a swing burner is installed in the middle of a water cooling wall; and a reheater side temperature adjusting baffle plate and a superheater side temperatureadjusting baffle plate are arranged. The boiler has the beneficial effects that steam parameters are realized, specifically, the main steam pressure is 17.5MPa.g, the main steam temperature is 571 DEGC, and the reheating steam temperature is 569 DEG C, and the invention mainly relates to preparation of the 200 MW grade high-efficiency subcritical boiler.

Description

technical field [0001] The present invention relates to a boiler of 200MW class. Background technique [0002] Small-capacity units have become an emerging market that major boiler manufacturers are vying for. Based on the design experience of large-capacity units, upgrading small-capacity units, leading emerging markets, and meeting new national environmental protection and energy-saving requirements has become an urgent issue that needs to be solved. [0003] Generally speaking, the capacity of a self-provided power plant is relatively small, generally below 200MW, and the steam parameters of high pressure or ultra-high pressure are mostly used, resulting in low efficiency of the unit. Compared with the high-efficiency parameters of large-capacity units, small-capacity units can also improve steam parameters to a certain extent, thereby improving unit efficiency and reducing unit coal consumption. According to the previous market research and the research and judgment of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F22B31/08F22B37/10F22G1/06F22G5/12F22G7/12
CPCF22B31/08F22B37/105F22G1/06F22G5/12F22G7/12
Inventor 徐栋孙洪民王永杰石司默高雷
Owner HARBIN BOILER
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