Method for measuring dry-quenching burning loss rate based on exergy balance

A measurement method and coke CDQ technology, which is applied in the thermal development of materials, etc., can solve the problem that the burning loss rate of CDQ coke is difficult to accurately measure and other problems

Inactive Publication Date: 2012-10-31
CHANGSHA CHANGZHI ELECTRICAL
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Problems solved by technology

[0004] In order to solve the problem that it is difficult to accurately measure the loss rate of CDQ coke, the

Method used

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  • Method for measuring dry-quenching burning loss rate based on exergy balance
  • Method for measuring dry-quenching burning loss rate based on exergy balance

Examples

Experimental program
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Effect test

Embodiment 1

[0054] Suppose the amount of red coke processed per day is ; The amount of medium-pressure steam produced at 450°C and 4.6Mpa is ; Specific enthalpy of medium pressure steam at 450°C and 4.6Mpa and specific entropy ;Enthalpy value of boiler feed water at 105℃ and specific entropy ; Enthalpy of water in boiler at 256°C and specific entropy ;Enthalpy of red coke at 1050℃ and entropy ; Enthalpy of coke at 180°C at CDQ outlet and entropy ; Specific enthalpy of coke combustion ; The proportion of boiler blowdown is ;system fire The coefficient of loss is ; The amount of steam leaked from the boiler . For specific parameter selection, please refer to "Practical Handbook of New Technologies and Standards for Installation and Maintenance of Coking Equipment" edited by Wang Xiaodong (Heilongjiang Cultural Audiovisual Publishing House, 2004 edition). Into the formula:

[0055]

[0056] The burning loss rate obtained by reliable calculation is 2.2%. Und...

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Abstract

The invention discloses a method for measuring a dry-quenching burning loss rate based on an exergy balance. The method comprises the following steps of: establishing an exergy balance model for a dry-quenching burning system after analyzing a dry quenching process, operating situations and related factors for affecting the dry-quenching burning loss rate; and obtaining a relationship between the dry-quenching burning loss rate and a steam yield through the analysis of the exergy balance model. According to the method disclosed by the invention, the dry-quenching burning loss rate can be simply, conveniently, effectively and quickly calculated out by using the relationship; and besides, the method has important meanings for reducing the dry quenching production cost and improving the dry quenching yield and efficiency.

Description

technical field [0001] The invention relates to a method for measuring the burning loss rate of CDQ. Background technique [0002] The scale and output of CDQ in my country rank first in the world. By the end of 2011, there were 150 CDQ devices with a processing capacity of 150 million tons. At present, the design value of domestic coke loss rate is about 0.9%, while the coke loss rate of domestic coking plants is much higher than this number, between 2% and 4%. Calculated based on the processing capacity at the end of 2011, 3% The burning loss of coke is 4.5 million tons, the average price is 1850 yuan / ton, and the direct economic loss is 8.325 billion yuan; as more CDQ devices are put into operation, the burning loss of coke will be more, so control the burning loss of coke The efficiency is already an urgent problem, and it has very important practical significance for improving the energy saving and emission reduction of enterprises. In order to effectively control the...

Claims

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Application Information

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IPC IPC(8): G01N25/20
Inventor 蒋朝辉任智勇粟金陈亮
Owner CHANGSHA CHANGZHI ELECTRICAL
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