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High-temperature testing probe, device and method for entrained flow gasifier

A technology for testing devices and testing methods, which is applied to measuring devices, electric devices, and thermometers using electric/magnetic elements that are directly sensitive to heat, etc., which can solve the problems of large errors, short measurement life, and low allowable temperature. Achieve high precision, improve test accuracy, and simple operation

Active Publication Date: 2013-04-24
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The technical problem to be solved by the present invention is to provide a high-temperature test probe for entrained bed gasification furnace and its device and test method in order to overcome the defects of low allowable temperature, short measurement life and large error in the prior art

Method used

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  • High-temperature testing probe, device and method for entrained flow gasifier
  • High-temperature testing probe, device and method for entrained flow gasifier
  • High-temperature testing probe, device and method for entrained flow gasifier

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Embodiment approach 1

[0091] The high temperature test device for entrained bed gasification furnace of the present invention is used to directly measure the temperature in the chamber of entrained bed gasifier.

[0092] Two thermocouples are set inside the high temperature measurement probe, here we choose K-type thermocouple, and the inner core material of the high temperature probe is Inconel625.

[0093] First, a high-temperature tube furnace is used to calibrate the relevant temperature correction coefficients, and the accuracy of the temperature measurement of the present invention under the condition of no ash and slag is checked. Put the high-temperature test probe into the constant temperature zone of the tube furnace for heating. The temperature in the constant temperature zone of the tube furnace is measured by a B-type thermocouple. The temperature measurement range is 1000-1500°C, and the temperature interval is 50°C. Record the relevant tube furnace temperature T g , and the inner co...

Embodiment approach 2

[0098] The high temperature test device for entrained bed gasification furnace of the present invention is used to directly measure the temperature in the chamber of entrained bed gasifier.

[0099] In order to further improve the temperature measurement accuracy of the high temperature measurement device, the inner core of the high temperature test probe is provided with n K-type thermocouples along the axial direction, 2<n≤10, to reduce the measurement error caused by improper placement of thermocouples, The inner core material of the high temperature test probe is made of Inconel625.

[0100] The relevant temperature correction coefficients of the temperature calculation model are obtained after the high-temperature tube furnace is calibrated.

[0101] Using diesel oil, Beisu pulverized coal and oxygen as the gasification medium, the temperature in the gasification furnace is measured with a K-type armored thermocouple. Use argon purge gas to protect the measuring surface ...

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Abstract

The invention discloses a high-temperature testing probe for an entrained flow gasifier. The high-temperature testing probe comprises a hollow barrel-shaped probe main body, a measuring inner core, at least one gas clamping layer and a plurality of thermocouples, wherein the at least one gas clamping layer is arranged at the outer side of the probe main body, the measuring inner core is embedded at an end part of the probe main body as a measuring surface, a cooling chamber is also arranged at the inner part of the probe main body, and is located at the rear part of the measuring inner core, a jetting surface is arranged at an end part of the at least one gas clamping layer close to the measuring inner core, testing ends of the thermocouples are inserted in the measuring inner core, and the other ends of the same penetrate through the probe main body through the cooling chamber. The invention also discloses a high-temperature testing device for the entrained flow gasifier, wherein thehigh-temperature testing device comprises the high-temperature testing probe, a cooling system and a data acquisition and processing system. The invention further discloses a testing method by adopting the high-temperature testing device. The high-temperature testing probe has the advantages of high temperature resistance and high accuracy, and can be used for realizing long-term, online and accurate temperature test of the entrained flow gasifier under the environment of high temperature.

Description

technical field [0001] The invention relates to a high-temperature test probe, in particular to a high-temperature test probe for an entrained bed gasification furnace, and a device and a test method including the same. Background technique [0002] The gasification technology of entrained bed refers to the technological process that the carbon-containing compound and the gasification agent flow together through the nozzle, and the flame type non-catalytic partial oxidation reaction is carried out in the gasification furnace. The gasification of the entrained bed is usually carried out under the condition of high temperature and high pressure, the operating pressure is 3.0-6.5MPa, and the operating temperature is 1300-1600°C. [0003] The synthesis gas produced by the gasifier is of great value, and it is the raw material for liquefaction (direct or indirect) of fuel oil, synthesis of methanol, ammonia and methyl ether, etc., as well as power generation of integrated coal ga...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01K7/02G01K1/12C10J3/72G01K13/024
CPCY02E20/18
Inventor 梁钦锋刘海峰龚欣于广锁王辅臣王亦飞许建良郭晓镭代正华李伟锋陈雪莉周志杰王兴军郭庆华刘霞
Owner EAST CHINA UNIV OF SCI & TECH
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