Determining one or more proportional particle group shares in flue gas of a recovery boiler

A waste heat boiler, flue gas technology, applied in furnace components, furnaces, furnace control devices, etc., can solve the problems of corrosion, reduce the availability of waste heat boilers, reduce the recovery of recyclable chemicals and steam production, and achieve short measurement time, The effect of fast burning disturbance

Pending Publication Date: 2022-02-01
ANDRITZ AG
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Problems solved by technology

[0004] Carrying particulates can lead to fouling and corrosion of heating surfaces, both of which can significantly reduce HRSG availability, as well as reduce recovery of recoverable chemicals and steam production

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  • Determining one or more proportional particle group shares in flue gas of a recovery boiler
  • Determining one or more proportional particle group shares in flue gas of a recovery boiler
  • Determining one or more proportional particle group shares in flue gas of a recovery boiler

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Embodiment Construction

[0050] The following is a detailed description of embodiments of the invention, examples of which are illustrated in the accompanying drawings. The following detailed description together with the accompanying drawings is intended to describe examples, not to represent the only ways of implementing or utilizing the provided examples. The following highlights an example activity and a series of phases / actions to assemble and use the example. However, the same or equivalent activities and stages / operations can be performed by other examples as well.

[0051] As an example, FIG. 1 depicts components of a system 100 in which different embodiments of the invention may be implemented in accordance with the invention. Figure 1A The example in represents a waste heat boiler 110, a sampler 120, means for generating a digital frame from a sample of particles contained in the flue gas (or in short, a flue gas sample) taken from the waste heat boiler 110 via the sampler 120 130. A compute...

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Abstract

The invention enables determining one or more proportional particle group shares in flue gas of a recovery boiler (110) based on optical information gained from a flue gas sample. A processor (202) is used to read (301) a digital frame comprising the area under consideration, which represents at least a part of the surface of a sampler (120) kept in the flue gas flow of a recovery boiler. Particle group areas matching a colour characteristic of the particle group comprised in the flue gas is determined (302) from the area under consideration. The joint area of the identified particle group areas is determined (304), and the share of the joint area from the total area is determined (305) as the proportional particle group share of the particle group.

Description

technical field [0001] The present invention relates to the determination of one or more particle group fractions in the flue gas of a recovery boiler based on optical information obtained from a flue gas sample. Background technique [0002] In principle, waste heat boilers have two main functions: chemical recovery, and recovery of the combustion heat generated in the process as steam and electricity. [0003] During combustion in the waste heat boiler, flue gases are produced, the heat of which is used for steam production. These flue gases generally comprise particles, especially so-called carry-over particles, which are produced from black liquor during the combustion process in the furnace. These particles are very light, making them easily inhaled into the powerful flue gas stream. When heating the surface at TI 5 -T 70 In the range of temperatures in which 15-70% of the ash is in liquid form, entrainment of the particles is particularly difficult because they are...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06V10/56G06V10/74G06K9/62G06T7/00G06T7/62G06T7/90G01N15/00
CPCG06T7/0004G06T7/62G06T7/90G01N15/00G01N15/0612G01N2015/0046D21C11/12D21C11/06F23N5/003F27D19/00F27D21/00G01N1/02G01N1/2258G01N21/25F23N5/265F27D21/02F27D2021/026G01N15/1436G01N15/1463G01N2015/1443G01N2015/1465
Inventor 海基·拉帕莱宁彼得里·皮诺恩
Owner ANDRITZ AG
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