Desulfurization control method and device

A control method and a technology of a circulating fluidized bed, which are applied in the field of desulfurization control methods and devices, can solve the problem of inability to adjust the limestone input amount in a timely and accurate manner, and achieve the effect of avoiding the lag of the limestone input amount.

Active Publication Date: 2018-11-02
CHINA SHENHUA ENERGY CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The embodiment of the present application provides a desulfurization control method and device to at least solve the problem in the related art that the limestone input cannot be adjusted timely and accurately when using a circulating fluidized bed for coal desulfurization

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  • Desulfurization control method and device
  • Desulfurization control method and device

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Embodiment 1

[0026] In this embodiment, a desulfurization control method is provided, which can be applied to industrial automation controllers, figure 2 is a flowchart of a desulfurization control method according to an embodiment of the present application, such as figure 2 As shown, the process includes the following steps:

[0027] Step S202, during the coal desulfurization process by the circulating fluidized bed boiler, determine the forecast curve of SO2 emission in a predetermined time period, wherein the forecast curve corresponds to multiple predicted values ​​at multiple moments in the predetermined time period;

[0028] The prediction curve for the current time period can be determined according to the SO2 emission before the preset time period, and the SO2 emission in the current time period can be used as the forecast basis for the future time period.

[0029] Step S204, adjusting the limestone input amount of the circulating fluidized bed boiler according to the predictio...

Embodiment 2

[0061] In this embodiment, a desulfurization control device is also provided, which is used to implement the above embodiments and preferred implementation modes, and what has been explained will not be repeated. As used below, the term "module" may be a combination of software and / or hardware that realizes a predetermined function. Although the devices described in the following embodiments are preferably implemented in software, implementations in hardware, or a combination of software and hardware are also possible and contemplated.

[0062] According to an embodiment of the present application, a desulfurization control device is also provided, including:

[0063] The determination module is used to determine the prediction curve of the SO2 emission in the predetermined time period for the circulating fluidized bed boiler, wherein the prediction curve corresponds to a plurality of prediction values ​​at multiple moments in the predetermined time period;

[0064] The regul...

Embodiment 3

[0073] According to yet another embodiment of the present application, a storage medium is further provided, and a computer program is stored in the storage medium, wherein the computer program is set to execute the steps in any one of the above method embodiments when running.

[0074] According to yet another embodiment of the present application, there is also provided an electronic device, including a memory and a processor, the memory stores a computer program, and the processor is configured to run the computer program to perform any one of the above method embodiments in the steps.

[0075] Obviously, those skilled in the art should understand that each module or each step of the above-mentioned application can be realized by a general-purpose computing device, and they can be concentrated on a single computing device, or distributed in a network composed of multiple computing devices Alternatively, they may be implemented in program code executable by a computing devic...

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Abstract

The invention provides a desulfurization control method and device. The method comprises the following steps of: in a process of carrying out coal desulfurization through a circulating fluidized bed boiler, determining a prediction curve of an SO2 discharge in a predetermined time period, wherein the prediction curve corresponds to a plurality of predicted values at a plurality of moment's in thepredetermined time period; and adjusting a limestone input of the circulating fluidized bed boiler according to the prediction curve. By adoption above technical scheme, the problem that the limestoneinputs cannot be timely and correctly adjusted when coal desulfurization is carried out by using circulating fluidized bed boilers in correlation technique is solved, the lag of adjusting the limestone inputs according to SO2 measured values at chimneys is avoided, and the limestone input can be properly controlled at each moment.

Description

technical field [0001] The present application relates to the field of chemical industry, in particular, to a desulfurization control method and device. Background technique [0002] In related technologies, limestone is the most commonly used desulfurization agent in the furnace during the combustion process of circulating fluidized bed boilers. During operation, limestone powder is transported into the furnace through limestone feeders and pipelines for chemical reaction to remove coal combustion. sulfur dioxide. During the operation of the circulating fluidized bed boiler, the temperature in the furnace is usually 830-900°C. At this temperature, the limestone can be fully roasted to decompose calcium carbonate into calcium oxide, and the calcium oxide and sulfur dioxide produced by coal combustion undergo a salinization reaction to produce Calcium sulfate is discharged in solid form to achieve the purpose of desulfurization. [0003] Limestone sintering reaction equatio...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): F23C10/28F23C10/18
CPCF23C10/18F23C10/28
Inventor佟春海张砺刚温浩冀树芳冀树春佟润东
OwnerCHINA SHENHUA ENERGY CO LTD