Soot blower operation control device, soot blower operation control method, and combustion system
A technology of operation control and soot blower, which is applied in the direction of combustion method, combustion product treatment, solid residue removal, etc., and can solve the problems of accelerating the wear of heat transfer tubes, etc.
Inactive Publication Date: 2019-08-06
MITSUBISHI POWER LTD
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Problems solved by technology
[0009] In addition, when a problem as described above occurs, the operation of the soot blower device is performed at a stage when it is not necessary to take measures to remove deposits, so the operation of the soot blower device may be performed more frequently than necessary, and as a result Accelerated wear of heat transfer tubes due to injection media (high pressure steam, compressed air, etc.) injected from the sootblower unit
This situation can be avoided by manually setting the operation of a plurality of sootblowers on standby according to the operation mode or by skipping the operation of a part of the plurality of sootblowers, but such a method must rely on the personal experience of the operator.
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[0156] Hereinafter, several embodiments of the present invention will be described with reference to the drawings. However, dimensions, materials, shapes, relative arrangements, and the like of components described as embodiments or shown in the drawings are not intended to limit the scope of the present invention thereto, but are merely illustrative examples.
[0157] For example, expressions such as "in a certain direction", "along a certain direction", "parallel", "orthogonal", "center", "concentric" or "coaxial" indicating relative configurations or absolute configurations not only mean strict This configuration in the sense also means a state of relative displacement within a range of angles or distances with a tolerance or degree of obtaining the same function.
[0158] For example, expressions such as "same", "equal", and "homogeneous" that indicate that things are equal not only mean strictly equal, but also mean that there is a difference in the degree of tolerance or...
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The present invention provides a soot blower operation control device capable of more appropriately operating a soot blower device. The soot blower operation control device is used for controlling theoperation of the soot blower device; the soot blower device is used for removing attachments attached to the surface of an evaporation pipe which is arranged in a combustion furnace and used for generating steam. This soot blower operation control device is provided with: a cooling index value acquisition unit that acquires a cooling index value that indicates the amount of cooling when steam that has been heated by a heat exchanger provided downstream of a soot blower device inside a combustion furnace is cooled by a temperature reducer; and an operation control unit configured to perform operation control of the soot blower device on the basis of the temperature reduction index value.
Description
technical field [0001] The invention relates to the operation control of a soot blower. Background technique [0002] For example, a furnace (combustion chamber) for fuel combustion and a flue communicated with the upper part of the furnace are formed inside a combustion furnace such as a boiler, and, for example, a part of the furnace wall forming the furnace is composed of an evaporating tube, or is provided in the flue. There are various heat exchangers such as superheaters and reheaters. For example, in a pulverized coal combustion boiler, the pulverized coal produced by the grinding device is supplied to the furnace through the burner and burned, but the ash and unburned components contained in the combustion gas generated by the combustion of this fuel adhere to the The heat transfer tubes of various heat exchangers, thus, the heat transfer efficiency of the heat transfer tubes is reduced. Therefore, in the past, a spray medium such as air or steam is sprayed from a ...
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IPC IPC(8): F23J3/02
CPCF23J3/02
Inventor 长谷川直毅山本祯久
Owner MITSUBISHI POWER LTD