A measurement method and application of arsenic solidification rate based on combustion temperature and ash melting point temperature
A technology of combustion temperature and measurement method, which is used in measurement devices, fuel oil testing, chemical property prediction, etc., can solve the problems of many experimental steps, slow detection speed, and no rapid detection method of arsenic volatilization characteristics of coal, etc., and achieve accurate results. Reasonable, less data, simple and clear calculation process
Active Publication Date: 2022-03-08
WUHAN UNIV OF SCI & TECH
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Problems solved by technology
Although it is theoretically possible to set the spray parameters according to the solidification rate of arsenic in coal samples from the source, according to the current measurement method of solidification rate of arsenic in coal samples, there are the following problems: the whole measurement process involves many experimental steps, and the whole measurement process It takes 4 to 5 hours, and the detection speed is slow
Due to the complexity of trace levels of arsenic and differences in coal quality, there is currently no rapid detection method that can accurately predict the arsenic volatilization characteristics of coal species
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[0025] The present invention uses A2, GZ, SJS coal type data to describe the technical solution.
[0026] Step 1: Collect basic data of coal types for calculation. The industrial analysis of coal types is shown in Table 2. The ash composition analysis of coal types and the basic data of coal types required for other calculations are listed in Table 2 and Table 3 respectively.
[0027] Table 1 Coal Industry Analysis
[0028]
[0029] Table 2 Analysis of coal ash composition
[0030]
[0031] It is known to those skilled in the art that the ash melting point temperature S of different coal types can be calculated by using the data in Table 2 T , which will not be repeated in this description.
[0032] Table 3 Basic data of coal types required for other calculations
[0033]
[0034] The initial content of arsenic and the experimental value / % of arsenic solidification rate in Table 3 are all detected by standard GB / T3058-2008 (Determination of arsenic in caol).
[0...
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The invention discloses a method for measuring arsenic solidification rate based on combustion temperature and ash melting point temperature, collecting basic data of coal type used for calculation, including coal type name, initial content data of arsenic in coal sample, and composition analysis of coal ash Data, coal sample ash melting point temperature, industrial analysis data of coal types; according to the industrial analysis of coal types, the volatile content calculation of coal types under a dry base is completed, and the coal quality category is judged; according to the coal sample combustion temperature and coal sample ash melting point temperature and Composition analysis of coal ash, calculate the volatile amount of arsenic in the coal sample at this temperature; at the same time, correct the difference of different coal quality according to the industrial analysis of coal types; curing rate. The present invention also provides the application of adjusting the spray volume of the arsenic-removing spray liquid based on the measurement method of the arsenic solidification rate. The method collects less data and is convenient for calculation; when predicting coal types with differences, the result can be made more accurate by using the method Accurate and reasonable.
Description
technical field [0001] The invention relates to a detection technology for trace elements in coal, in particular to a method for measuring arsenic solidification rate based on combustion temperature and ash melting point temperature, and also relates to a flue gas dearsenic technology, in particular to a method for measuring arsenic solidification rate based on combustion temperature and ash melting point temperature. The application of adjusting the spray amount of the arsenic removal spray. Background technique [0002] The flue gas emitted by coal-fired boilers contains a large amount of fine particle fly ash, which is enriched with many toxic trace elements, such as arsenic. The serious environmental pollution problem caused by this has attracted great attention at home and abroad. Arsenic will exist in gaseous form or be enriched in submicron particles after volatilizing during combustion, and it is difficult to capture it by existing flue gas dust removal equipment suc...
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IPC IPC(8): G16C20/10G16C20/30G01N25/22G01N33/22
CPCG16C20/10G16C20/30G01N25/22G01N33/222
Inventor 韩军熊自江赵波
Owner WUHAN UNIV OF SCI & TECH
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