Method for estimating performance of additive for limestone wet-method flue gas desulfurization

A technology of wet flue gas desulfurization and evaluation methods, which is applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve the problems of large amount of chemical consumption, incompleteness, and unsystematic, and achieve shortened evaluation time, reduced chemical consumption, and accurate Evaluation effect

Inactive Publication Date: 2012-04-18
ELECTRIC POWER RES INST OF STATE GRID ZHEJIANG ELECTRIC POWER COMAPNY +1
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Problems solved by technology

Many evaluation methods not only have problems such as long time consumption and large consumption of chemicals required for evaluation, but a

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  • Method for estimating performance of additive for limestone wet-method flue gas desulfurization
  • Method for estimating performance of additive for limestone wet-method flue gas desulfurization
  • Method for estimating performance of additive for limestone wet-method flue gas desulfurization

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Embodiment Construction

[0024] The performance evaluation method of limestone wet desulfurization additive, the steps are as follows:

[0025] (1) According to the desulfurization system used and the desulfurization additives to be evaluated, select the operating conditions required for evaluation;

[0026] (2) Operate according to the selected operating conditions, and calculate various parameters such as desulfurization efficiency before and after the addition of additives in each operating condition. During the process, it is necessary to ensure the accuracy and comprehensiveness of the data statistics and the matching degree of the operating conditions before and after the addition of additives;

[0027] (3) Evaluate the effect of additives on the desulfurization effect by using the desulfurization efficiency of each working condition after the addition of additives is increased relative to the desulfurization efficiency without adding them, and at the same time use indicators such as gypsum quali...

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Abstract

The invention relates to a method for estimating performance of an additive for limestone wet-method flue gas desulfurization. At present, chemical agent consumption is very high in estimation on the performance of a desulfurization additive, and the additive is estimated incompletely and inaccurately since evaluation methods are unscientific, incomplete and not systematic. The method provided by the invention comprises the following estimating steps: 1) selecting the operation conditions required for evaluating according to the characteristics and operation state of the desulfurization system needing the additive; 2) realizing the selected operation work conditions that the additive is added and the additive is not added, and recording relative parameters; 3) evaluating the influence of the additive on the desulfurization effect according to the improvement condition of the desulfurization efficiency after the additive is added as compared with the desulfurization efficiency without adding the additive in each work condition; meanwhile, evaluating the influence of the additive on the desulfurized byproduct and subsequent processing technique by using the gypsum quality and COD (chemical oxygen demand) content of desulfurized waste water as indexes. The method provided by the invention can scientifically and accurately evaluate the use effect of the desulfurization additive, the evaluation time is greatly shortened, and the chemical agent consumption is greatly reduced.

Description

technical field [0001] The invention relates to a performance evaluation method of a limestone wet desulfurization additive. Background technique [0002] Limestone wet desulfurization process is currently the most widely used desulfurization process in coal-fired units of thermal power plants. 2 Issues such as substandard emission concentration; and the energy-saving requirements of systems in good operating condition, the need to use additives to improve desulfurization efficiency or reduce the number of circulating slurry pumps to achieve energy conservation arises at the historic moment. [0003] At present, users and producers of various additives in China have different methods of evaluating additives, and it can even be said that they are quite different, and a complete system has not yet been formed. Many evaluation methods not only have problems such as long time consumption and large consumption of chemicals required for evaluation, but also unscientific, incomple...

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Application Information

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IPC IPC(8): G01N33/00
Inventor 张岩李治国严雨帆田浩祝郦伟金东春
Owner ELECTRIC POWER RES INST OF STATE GRID ZHEJIANG ELECTRIC POWER COMAPNY
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