System for measuring temperature of coal gas flow bed gasification reactor and method for measuring temperature of coal gas flow bed gasification reactor using the same

A gasification reactor and temperature measurement technology, applied in the field of coal gasification, can solve the problem that the safety status of the gasification reactor cannot be grasped, and the surface temperature of the gasification reactor cannot be accurately grasped from time to time. Problems such as dangerous operation of bed gasification reactor

Active Publication Date: 2009-01-28
XIAN ORIGIN CHEM TECH
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Problems solved by technology

The defect of these methods is that it is impossible to accurately grasp the phenomenon that the surface temperature of the gas flow gasification reactor exceeds the limit (exceeding the safe temperature), that is, the safety status of the gas flow gasification reactor cannot be grasped, and the long distance monitoring of the gas flow flow cannot be achieved. The operation status of the gasification reactor, so the operation of the gas flow gasification reactor is very dangerous

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  • System for measuring temperature of coal gas flow bed gasification reactor and method for measuring temperature of coal gas flow bed gasification reactor using the same
  • System for measuring temperature of coal gas flow bed gasification reactor and method for measuring temperature of coal gas flow bed gasification reactor using the same
  • System for measuring temperature of coal gas flow bed gasification reactor and method for measuring temperature of coal gas flow bed gasification reactor using the same

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Effect test

Embodiment 1

[0089] The direct temperature measuring part of the invention is used to measure the temperature of the gas flow-bed gasification reactor.

[0090] Use Henan Yima coal, water, highly polymerized sodium naphthalenesulfonate, and sodium carbonate to make a slurry with a hydrocarbon-containing substance concentration of about 65% by weight, and their proportions are 61.5% and 38% by weight of the total material. %, 0.3%, 0.2%, the flow rate is 68613.5kg / h, after being boosted to 7.8MPa by the high-pressure slurry pump, it is sent into the gasification reactor of the gas flow bed, and the pure oxygen oxidizing agent with a concentration of 99.6% (volume) is introduced. The incomplete combustion reaction is carried out at an operating pressure of 6.5MPa and a reaction temperature of 1390°C to obtain CO+H 2 Dry synthesis gas with a content of 78.8% (dry basis volume).

[0091] Wherein, the gas entrained bed gasification reactor adopts the double platinum-rhodium thermocouple of the...

Embodiment 2

[0095] The indirect temperature measuring part of the invention is used to measure the temperature of the gas flow-bed gasification reactor.

[0096] The crude synthesis gas was prepared in the same coal entrained bed gasification reactor as in Example 1 and under the same reaction conditions. Adopt the double platinum-rhodium thermocouple identical with embodiment 1 to measure the temperature of described gas entrained bed gasification reactor directly and the indirect temperature measurement part of the present invention, as figure 1 shown. By passing cooling water into the indirect temperature measuring probe 108, the temperature transmitter 130 and the temperature transmitter 132 sold by Hangzhou Tiankang Instrument Co., Ltd. under the trade name temperature transmitter are used to measure the temperature when the cooling water enters and exits the probe respectively. Temperature, and then through the flow meter 112 sold by Hangzhou Tiankang Instrument Co., Ltd. under the...

Embodiment 3

[0106] The temperature of the entrained gasification reactor was measured by methane content thermometry.

[0107] The crude synthesis gas was prepared in the same coal entrained bed gasification reactor as in Example 1 and under the same reaction conditions. The temperature of the gas entrained bed gasification reactor was measured by using the same double platinum-rhodium thermocouple direct temperature measurement part as in Example 1 and the methane content temperature measurement part of the present invention. The methane content in the crude synthesis gas was measured using a methane content measuring instrument sold by Zhuhai Saisite Instrument Equipment Co., Ltd. under the trade name non-dispersive infrared detector. Measured the temperature of this gas entrained bed gasification reactor, its methane content and gasification reactor temperature value are listed in the following table 4:

[0108] Table 4 Comparison value of methane content and gasification reactor temp...

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Abstract

The invention discloses a temperature measuring system of a coal gas fluidized bed gasification reactor. The system comprises the temperature measurement of the coal gas fluidized bed gasification reactor and the temperature measurement of a shell body of the coal gas fluidized bed gasification reactor. The temperature measuring system of the coal gas fluidized bed gasification reactor combines a direct temperature measuring method, an indirect temperature measuring method and a methane content temperature measuring method and also utilizes a surface hot spot detection system to measure the temperature of the shell of the coal gas fluidized bed gasification reactor simultaneously. The temperature measuring method of the invention not only prolongs the service life of a thermoelectric couple, but also measures the temperatures of the coal gas fluidized bed gasification reactor and the shell of the coal gas fluidized bed gasification reactor more accurately and comprehensively.

Description

【Technical field】 [0001] The invention relates to the technical field of coal gasification, more specifically, the invention relates to a temperature measurement system of a gas flow gasification reactor, and the invention relates to a method for measuring the temperature of a gas flow gasification reactor using the temperature measurement system. 【Background technique】 [0002] Simply put, coal gasification is the conversion of hydrocarbons in raw materials into clean synthetic gas or syngas mainly composed of hydrogen and carbon monoxide. Coal gasification technology is the basis for the development of coal-based chemicals, coal-based liquid fuels, coal gasification combined cycle power generation, polygeneration and other process industries, and is a key technology in the field of clean coal technology. Coal gasification technology with high efficiency and ultra-clean characteristics is the mainstream of coal technology development in the world today. [0003] In a gasif...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01K13/00G01K7/02C10J3/56
CPCY02E20/18
Inventor 门长贵贺根良李璞王锦韦孙昌徐红东郑亚兰
Owner XIAN ORIGIN CHEM TECH
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