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Determination method for calorific value of volatile and combustible liquid fuel

A liquid fuel and measurement method technology, applied in the direction of material thermal development, etc., can solve the problems of detection result error, cumbersome operation procedures, and rupture of sealing film, so as to improve detection speed and accuracy, reduce repeated detection process, and avoid volatilization loss effect

Inactive Publication Date: 2018-05-08
NINGXIA PAGODA CHEM CENT LAB CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, the calorific value of volatile combustible liquids is measured according to GB 384-1981 "Method for Determination of Calorific Value of Petroleum Products". It takes considerable time to prepare the material to seal the sample
During the oxygenation process, as the oxygenation pressure fluctuates, it is easy to cause the sealing film to break and the sample to volatilize, resulting in a large error in the test result

Method used

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  • Determination method for calorific value of volatile and combustible liquid fuel
  • Determination method for calorific value of volatile and combustible liquid fuel
  • Determination method for calorific value of volatile and combustible liquid fuel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] (1) Grind the coal granular activated carbon in a sealed sample making machine and pass it through a 100-mesh round-hole sieve. Take the activated carbon under the sieve and dry it in an oven at 150°C for 2 hours, take it out and put it in a desiccator to cool. Weigh 0.9000~1.1000g of the cooled activated carbon into the crucible of the microcomputer automatic calorimeter. According to GB / T 213-2008, measure its calorific value with a microcomputer automatic calorimeter;

[0021] (2) Weigh 0.9000~1.1000g of activated carbon in another crucible, use a syringe or dropper to absorb the volatile flammable liquid, weigh 0.2000~0.4000g of the volatile flammable liquid, and add it dropwise to the activated carbon in the crucible , according to GB / T213-2008, measure its calorific value with a microcomputer automatic calorimeter;

[0022] (3) The difference between the total calorific value of the activated carbon and the volatile combustible liquid measured in step (2) and the...

Embodiment 2

[0024] Step (1) is the same as in Example 1. In step (2), 1.0023g of activated carbon is taken into the crucible, and 0.2056g of diesel oil is weighed and added dropwise to the activated carbon. The remaining steps are the same as in Example 1.

Embodiment 3

[0026] Step (1) is the same as Example 1. In step (2), 1.0035g of activated carbon is taken in a crucible, and 0.2041g of gasoline is weighed and added dropwise to the activated carbon. The remaining steps are the same as those in Example 1.

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Abstract

The invention discloses a determination method for the calorific value of volatile and combustible liquid fuel. The method comprises the following operation steps: (1) preparing coal particle activated carbon into activated carbon with the size of 100 meshes; drying at 150 DEG C for 2h; determining the calorific value by utilizing a microcomputer automatic calorimeter according to GB / T 213-2008; (2) weighing a certain amount of the activated carbon and putting the activated carbon into a crucible; sucking combustible liquid by utilizing an injector or a dropper; dropwise adding the combustibleliquid into the activated carbon in the crucible; determining the calorific value by utilizing the microcomputer automatic calorimeter according to GB / T 213-2008; (3) obtaining a difference between the calorific values determined by two times, i.e., the calorific value of the volatile and combustible liquid fuel. According to the determination method disclosed by the invention, the strong adsorption performance of the activated carbon is utilized; after being adsorbed, the volatile and combustible liquid fuel is determined according to the calorific value of a coal sample; the method is simple and convenient to operate. The volatile and combustible liquid fuel adsorbed by the activated carbon is not easy to volatilize and detection errors caused by the fact that the sample is volatilizedare reduced. After the volatile and combustible liquid fuel is adsorbed by the activated carbon, the combustion is stable, a deflagration phenomenon is not easily generated and the detection is more stable.

Description

technical field [0001] The invention relates to a method for measuring the calorific value of a volatile combustible liquid, which is simple, easy to operate and has high accuracy. Background technique [0002] The determination of the calorific value of solid fuel is generally performed by pressing tablets or directly measuring the original sample. For volatile flammable liquids, its fluidity is large, and many volatile flammable liquids are volatile, so the same method as that of solid fuels cannot be used. Its calorific value is measured. The country currently invests a lot of money in the development and research of new energy. As volatile and combustible liquids for new energy, both in terms of thermal energy management and calculation of internal combustion engine efficiency, it is necessary to know their calorific value. However, at present, the calorific value of volatile and combustible liquids is determined according to GB 384-1981 "Determination of Calorific Valu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N25/44
Inventor 刘晓燕张瑞李拥军马飞龙杨晓丽
Owner NINGXIA PAGODA CHEM CENT LAB CO LTD
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