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Method for measuring heat value and improving anion absorption amount

An anion and absorption technology, applied in the field of environmental protection, can solve the problems that the ignition wire cannot be ignited, the content cannot be measured, and the sample has no calorific value.

Pending Publication Date: 2021-05-04
北控城市环境资源(宜昌)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] (1) When the ignition point of the sample is high or the moisture is high, the ignition wire cannot ignite the sample, resulting in the false impression that the sample has no calorific value;
[0005] (2) After the ignition failure, the absorption liquid cannot be obtained, resulting in the inability to measure the contents of F, Cl, S, and P in the hazardous waste
[0006] Many analysis attempts have been made before, such as using lens cleaning paper or benzoic acid to support combustion, or drying samples and then analyzing the calorific value. On the one hand, there are large errors, and on the other hand, the probability of ignition failure is still relatively high, at 50%-60%. between, but using diesel combustion, the ignition success rate of the sample is above 95%

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The calorimeter was first turned on and preheated 3 times. Before measuring the calorific value of the sample, it is necessary to analyze the calorific value of the diesel (after many tests, the calorific value of the diesel used by our company is 44541kJ / kg). After that, each test software will automatically subtract the added diesel heat according to the added amount of diesel (the calorific value of diesel does not need to be analyzed and filled in before each test).

[0020] In the first step, about 0.5g of a homogeneously mixed hazardous waste sample is selected and placed in a crucible, and then about 0.05g of diesel is added dropwise (the data are all accurate to 0.002g). At the same time, add 10mL concentration of 4g / L sodium hydroxide solution and 2mL mass concentration of 30% hydrogen peroxide solution in the oxygen bomb for use. In the second step, put the crucible with the sample on the crucible stand, and fix the ignition wire. The ignition wire should be ...

Embodiment 2

[0023] Select benzoic acid tablets, add appropriate diesel oil and compare the obtained data with the standard calorific value of benzoic acid. It is known that the purchased benzoic acid merchants mark the calorific value as 26465kJ / kg, and the experimental data are as follows:

[0024] Tablet mass / g Added diesel mass / g Calorific value / (kJ / kg) 1 0.9911 0.0549 26368 2 0.9848 0.0556 26527 3 0.9432 0.0533 26334 4 0.9663 0.0533 26465 5 0.9303 0.0563 26520

[0025] The error between the data and the standard calorific value of benzoic acid is within 0.5%, which proves that the data obtained by adding diesel as a combustion aid is more accurate and reliable.

[0026] The invention is suitable for measuring the calorific value of hazardous waste and improving the absorption of anions in the absorption liquid.

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Abstract

The invention discloses a method for measuring calorific value and improving anion absorption capacity, and belongs to the technical field of environmental protection. The mass ratio of added diesel oil to a sample is 1:15+ / -3; a hydrogen peroxide solution can improve the absorption amount of anions F, Cl, S and P; and the calorific value can be accurately measured. The method is suitable for measuring the calorific value of the hazardous waste and improving the absorption amount of anions in the absorption liquid.

Description

technical field [0001] The invention belongs to the technical field of environmental protection and relates to measuring the calorific value of hazardous waste and improving the absorption of anions. Background technique [0002] The most common disposal method in the hazardous waste treatment industry is incineration. Before incineration and disposal, each batch of hazardous waste needs to be compatible so that all data meet the requirements for entering the kiln. The average calorific value should not be too high or too low. If the calorific value is too low, more natural gas will be consumed; if the calorific value is too high, the incineration will The temperature in the furnace is too high, which will damage the equipment. [0003] However, the traditional methods of measuring calorific value mainly have the following problems: [0004] (1) When the ignition point of the sample is high or the moisture is high, the ignition wire cannot ignite the sample, resulting in t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N25/22
CPCG01N25/22
Inventor 赵涛夏同成曹敏张治国
Owner 北控城市环境资源(宜昌)有限公司