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Method for determining performance of desulfurization and denitrification activated carbon and application thereof

A technology of desulfurization, denitrification and activated carbon, which is applied in chemical method analysis, measuring devices, instruments, etc., can solve the problems of judging analysis tower analysis, water capacity error, complexity, etc., and achieves the effect of short time consumption

Active Publication Date: 2020-08-04
INNER MONGOLIA PURUIFEN ENVIRONMENTAL SCI ANDTECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, according to the prior art, it takes about 40 hours or even longer to conduct a complete set of tests
Moreover, the detection methods in the national standard are only applicable to the laboratory testing process. If they need to be applied during on-site debugging, specific instruments must be available.
However, these instruments are very expensive and need to be customized and complicated to install, and are not popular in China, so some companies cannot use the measurement methods in these national standards for on-site application
Therefore, during the continuous operation of the desulfurization tower and each tower, the above-mentioned direct detection method cannot obtain the operating status of the desulfurization tower and each tower on site, and cannot know the activated carbon adsorption status of each section of the desulfurization tower, which is not conducive to on-site commissioning of each tower. parameter
The desulfurization and denitrification activated carbon can be reused after being analyzed by the desorption tower, but because the above-mentioned methods of directly detecting the iodine value, desulfurization value and denitrification rate are not conducive to field application, these direct detection methods cannot judge the desorption of the desorption tower on site. Is it completely
In addition, when using GB / T 7702.5-1997 to measure the water capacity of desulfurization and denitrification activated carbon, because the activated carbon will shed some residues or particles (ie floating ash) during the boiling process and the sampling volume is not representative, etc., it will lead to the experimental measurement process. Deviations will affect the measured water capacity, and there will be a large error

Method used

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  • Method for determining performance of desulfurization and denitrification activated carbon and application thereof
  • Method for determining performance of desulfurization and denitrification activated carbon and application thereof
  • Method for determining performance of desulfurization and denitrification activated carbon and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0092] Example 1: Prediction of iodine value of desulfurization and denitrification activated carbon performance index

[0093] Sampling is taken from Table 1, and five groups of samples are taken for each parallel experiment, all adopting the existing conventional measurement methods in the industry (for example, using GB / T 7702.5-1997 to measure water capacity, using GB / T

[0094] 7702.7-87 measure iodine value), measure the water capacity and iodine value of these samples, as shown in table 2 and table 3, so that follow-up drawing scatter diagram:

[0095] Table 2 The iodine value and water capacity values ​​of five groups of samples in the first group of parallel experiments

[0096] Sample serial number 1# 2# 3# 4# 5# Iodine value (mg / g) 216.00 324.00 381.00 435.00 509.00 Water capacity (%) 34.36 39.72 44.03 46.62 63.63

[0097] Table 3 The iodine value and water capacity values ​​of the five groups of samples in the second group of...

Embodiment 2

[0112] Example 2: Prediction of desulfurization value of desulfurization and denitrification activated carbon performance index

[0113] A prediction model for water capacity value X and desulfurization value Y can then be established. The specific method is to take samples from Table 1, and each parallel experiment takes five groups of samples, all using the existing conventional measurement methods in the industry (for example, using GB / T 7702.5-1997 to measure water capacity, using GB / T 30202.4-2013 to measure Desulfurization value), measure the water capacity and desulfurization value of these samples, as shown in Table 7 and Table 8, so that follow-up drawing scatter diagram:

[0114] Table 7 The desulfurization value, water capacity and iodine value of the five groups of samples in the first group of parallel experiments

[0115] Sample serial number 1# 2# 3# 4# 5# Iodine value (mg / g) 216.00 324.00 381.00 435.00 509.00 Desulfurization value...

Embodiment 3

[0129] Example 3: Prediction of denitrification rate of desulfurization and denitrification activated carbon performance indicators

[0130] The above method establishes and selects the optimal prediction model of water capacity, iodine value and desulfurization value. In addition, the present invention also establishes a prediction model of water capacity and denitrification rate. The specific method is, first select three groups of desulfurization and denitrification activated carbon samples with different iodine values ​​from Table 1 (see Table 12 and Table 13):

[0131] Table 12 The first group of parallel experiments three groups of different iodine value samples

[0132] Sample serial number 15# 16# 17# Iodine value (mg / g) 200-250 350-400 ＞500

[0133] Table 13 The second group of parallel experiments three groups of different iodine value samples

[0134] Sample serial number 18# 19# 20# Iodine value (mg / g) 200-250 350-400 ...

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Abstract

The invention relates to a method for determining the performance of desulfurization and denitrification activated carbon and application thereof. An establishment method of a prediction model comprises the following steps: step a, sampling desulfurization and denitrification activated carbon in groups and determining the water capacity of each group of samples; step b, determining an iodine valueand / or desulfurization value of each group of desulfurization and denitrification activated carbon samples; and step c, respectively establishing prediction models of the iodine value and / or the desulfurization value of the desulfurization and denitrification activated carbon sample. According to the invention, prediction models of functional relationships between the water capacity of the activated carbon and the iodine value, desulfurization value and denitration rate are established; the prediction models are used for directly converting the water capacities into the iodine value, the desulfurization value and the denitration rate of the activated carbon, so that the detection speed is higher by being compared with direct detection of the iodine value, the desulfurization value and thedenitration rate; and specific instruments are not needed, and the method is more suitable for field detection application.

Description

technical field [0001] The invention relates to the field of desulfurization and denitrification activated carbon, in particular to a method for measuring the performance of desulfurization and denitration activated carbon and its application in detecting or identifying the regeneration effect or inactivation of desulfurization and denitration activated carbon on the production site. Background technique [0002] Activated carbon dry flue gas desulfurization and denitrification process is an atmospheric environment treatment technology developed in the 1960s. This technology has the advantages of water saving, high purification efficiency, simultaneous removal of dust, heavy metals and toxic substances, and the ability to generate a variety of high-use value. It is a relatively advanced, economical and effective flue gas deep purification technology. At present, the activated carbon for flue gas desulfurization and denitrification on the market is coal-based activated carbon...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N31/00
CPCG01N31/00Y02A50/20
Inventor 乔骊竹俞勇梅彭汉忠陈海波陈小敏凌勇姜维李咸伟
Owner INNER MONGOLIA PURUIFEN ENVIRONMENTAL SCI ANDTECH
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