Steam temperature characteristic optimal adjusting method for pulverized coal combustion direct current furnace

A technology of pulverized coal combustion and adjustment method, which is applied in the direction of controlling combustion, lighting and heating equipment, which can solve problems such as unsatisfactory effect and large deviation of steam temperature, so as to improve the level of economical and efficient operation, reduce loss and alleviate partial burning Effect

Inactive Publication Date: 2018-12-25
SUZHOU XIRE ENERGY SAVING ENVIRONMENTAL PROTECTION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for optimizing and adjusting the steam temperature characteristics of a pulverized coal combustion once-through furnace, and to solve the techni

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  • Steam temperature characteristic optimal adjusting method for pulverized coal combustion direct current furnace
  • Steam temperature characteristic optimal adjusting method for pulverized coal combustion direct current furnace
  • Steam temperature characteristic optimal adjusting method for pulverized coal combustion direct current furnace

Examples

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Example Embodiment

[0034] Example 1

[0035] See figure 1 As shown in the flow chart of the method for optimizing and adjusting the characteristics of steam temperature, the method for optimizing and adjusting the characteristics of steam temperature according to the present invention is described as an example of the optimization and adjustment of the characteristics of the steam temperature of the front and rear wall opposed combustion furnace.

[0036] The method for optimizing and adjusting the steam temperature characteristics of the pulverized coal combustion once-through furnace of this embodiment 1 includes the following steps:

[0037] Step S1: Implement various test steps of steady-state combustion adjustment test;

[0038] Step S2: Implement various test steps of the dynamic steam temperature characteristic test, some of which are based on the corresponding results obtained from the steady state combustion adjustment test in the step S1;

[0039] Step S3: The DCS control system of the once-thr...

Example Embodiment

[0053] Example 2

[0054] See figure 1 The flow block diagram of the method for optimizing and adjusting the steam temperature characteristic, taking a four-corner tangential combustion furnace as an example, illustrates the method for optimizing and adjusting the steam temperature characteristic of the present invention.

[0055] The method for optimizing and adjusting the steam temperature characteristics of the pulverized coal combustion once-through furnace in Example 2 is different from the method in Example 1: The counter-burning furnace in Example 1 has no burner swing angle, so the dynamics in step 2 The first task in the steam temperature characteristic test is to realize the automatic control input of the flue gas baffle. The automatic control of the flue gas baffle is the main adjustment method of the reheated steam temperature; in this embodiment 2, for the four-corner tangential combustion furnace, In the dynamic steam temperature characteristic test of step S2, the f...

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Abstract

The invention provides a steam temperature characteristic optimal adjusting method for a pulverized coal combustion direct current furnace. The steam temperature characteristic optimal adjusting method comprises a stable-state combustion adjusting test and a dynamic steam temperature characteristic test, wherein the direct current furnace is provided with a DCS control system. The steam temperature characteristic optimal adjusting method comprises the following steps: step S1: implementing test steps of the stable-state combustion adjusting test; step S2: implementing test steps of the dynamicsteam temperature characteristic test, wherein a part of the dynamic steam temperature characteristic test is based on the corresponding results obtained by the stable-state combustion adjusting testin the step S1; and step S3: enabling the DCS control system of the direct current furnace to integrate a final optimal curve of each test of the stable-state combustion adjusting test in the step S1and the dynamic steam temperature characteristic test in the step S2, and through combining a part of test results obtaining running guiding cards in the step S1 and the step S2, optimizing the steamtemperature characteristic of the direct current furnace. Through the adoption of the steam temperature characteristic optimal adjusting method disclosed by the invention, under the premise that theequipment is not transformed, the potential of the DCS system and the potential of boiler main and auxiliary equipment are sufficiently promoted, the combustion of the boiler is under the best condition, and the optimizing of the steam temperature characteristic is realized.

Description

technical field [0001] The invention relates to the field of boiler debugging, in particular to a method for optimizing and adjusting steam temperature characteristics of a pulverized coal combustion once-through furnace. Background technique [0002] With the long-term operation of deep low-nitrogen combustion in coal-fired power plants and the continuous improvement of the AGC load response requirements of the power grid, during daily operation, especially when the load is rapidly raised and lowered, the main and reheat steam temperatures of the boiler frequently appear to be significantly lower, which seriously affects It ensures the economical and efficient operation of the current large-capacity and high-parameter units. Steam temperature optimization control refers to the method and means of maintaining the steam temperature at the outlet of the boiler superheater and reheater within the specified limit range during the operation of the boiler. When the boiler is runn...

Claims

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Application Information

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IPC IPC(8): F23N5/00
CPCF23N5/00
Inventor 王小华梅振锋赵鹏陈敏薛晓垒俞胜捷彭小敏刘瑞鹏
Owner SUZHOU XIRE ENERGY SAVING ENVIRONMENTAL PROTECTION TECH CO LTD
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